Ok, most of these people are wrong and obviously don't read anything. What your friend is talking about is a plant-based cleaner for produce (brands: Fit and Veggie Wash). You buy them in spray form in the produce section of the supermarket. They get off 98% more chemical pesticide residue and dirt than water alone. While I'm not too afraid to consume dirt on my food, I am concerned about the chemicals. Not to mention, things like grapes and apples have added wax to the outside. Who wants to eat wax? The sprays get that stuff off. All you have to do is spray the fruits and veggies that you normally was with water, and then rinse the spray off. It easily rinses off, so you don't have to worry about residue from the cleaner itself. Plus, it's made from plants anyway, so it's better then the pesticides that you'd be consuming otherwise. It's less than $5 for a bottle, and well worth the price.